Originally Posted by
axolotl
OK, sorry to push you on this but it's harder to help people if we don't know context.
I'm not saying it's a clever thing to do, but some people take recreational drugs a lot and never worry. You're obviously feeling guilt and stupidity over taking ecstasy, unduly so IMHO. If taking drugs causes anxiety make sure you don't do it again, and if you do try and be more responsible (though obviously the best advice is still don't).
But you've said yourself you noticed symptoms after watching the YouTube video? Doesn't that tell you something?
I'd seriously consider talking to a doctor about anxiety, it's not normal to get this obsessed over something, and you have said you have a history of anxiety. And try and stop overanalysing your vision - it will seriously screw you up as you'll find all kind of oddness and defects that are perfectly normal.